GST Return Filing Due Dates FY 2025-26 — Complete Calendar

Complete due date calendar for GSTR-1, GSTR-3B, GSTR-9, GSTR-9C for FY 2025-26. Includes QRMP deadlines, late fee structure and interest rates.

GSTR-1 Due Dates

Monthly filers: 11th of following month. QRMP quarterly filers: Q1 (Apr-Jun) by 13 July, Q2 (Jul-Sep) by 13 October, Q3 (Oct-Dec) by 13 January, Q4 (Jan-Mar) by 13 April.

GSTR-3B Due Dates

AATO > ₹5 crore: 20th of following month. QRMP Category 1 states (Tamil Nadu, Andhra Pradesh, Karnataka): 22nd. QRMP Category 2 states: 24th.

GSTR-9 Annual Return

Due 31 December of the following year. Optional for turnover below ₹2 crore. Mandatory for turnover above ₹2 crore. GSTR-9C mandatory for turnover above ₹5 crore.

Late Fee Structure

Under Section 47 CGST Act: ₹50/day (₹25 CGST + ₹25 SGST) for returns with taxable supplies. ₹20/day for nil returns. Interest at 18% per annum under Section 50 on outstanding tax liability.

CMP-08 for Composition Dealers

Composition scheme taxpayers must file CMP-08 (quarterly challan) by the 18th of the month after each quarter. The annual statement GSTR-4 is due by 30 April of the following year. Non-filing of CMP-08 triggers auto-cancellation of composition registration after 3 consecutive quarters.

How to Track GST Filing Status

Log into the GST portal at gstin.gov.in → Services → Returns → Track Return Status. Enter your GSTIN and tax period to check if your return is filed, pending, or in error. FilingPro sends WhatsApp confirmation with the ARN (Acknowledgement Reference Number) immediately after each filing.

Penalties You Must Avoid

Missing GSTR-1 blocks your customers from claiming ITC — damaging your business relationships. Missing GSTR-3B accumulates late fees and 18% interest on tax payable. Multiple missed periods trigger GSTIN suspension and eventually cancellation. FilingPro's compliance calendar management eliminates these risks completely.

FilingPro Chennai — Your GST Filing Partner

With 15+ years of GST compliance experience and a zero-penalty track record, FilingPro Chennai manages GSTR-1, GSTR-3B, GSTR-9 and GSTR-9C for 500+ businesses across 46 Chennai localities. WhatsApp your documents to 9566-068-468 — we handle everything, delivered by the 11th every month.